[@siparker Participant 8 years, 6 months ago]

For anyone who is looking for the solution for not being able to save buddypress settings.

Various plugins cause issues with adding various extra css in the admin area.

in my case there was a css file from a Codecanyon Woozone plugin which hid the P tags in the buddypress options pages

use firebug and find the bottom div that cotnains the submit button and disable any css that is hiding it and you can click the submit button.

after you have done that you might want to tell the plugin developer that caused the issue about it.

TLDR the button is there its probably just hidden. use firebug or chrome tools to unhide it and click save.